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Finding the Fourth Proportional to 319,031.42, 478,630.20 and 119,367.42

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Solution

The fourth proportional to 319,031.42, 478,630.20 and 119,367.42 is: 179,082.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,031.42 : 478,630.20 = 119,367.42 : x
  2. Step 2: Convert to fraction form
    319,031.42/478,630.20 = 119,367.42/x
  3. Step 3: Cross multiply
    319,031.42x = 478,630.20 × 119,367.42
  4. Step 4: Simplify right side
    319,031.42x = 57,132,852,108.08
  5. Step 5: Solve for x
    x = 57,132,852,108.08/319,031.42
  6. Step 6: Final answer
    x = 179,082.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.